Platen printing press



June 11, 1935. H, HONIGMAN 2,004,149

PLA'I'EN PRINTING PRESS Filed Oct. 21, 1931 2 Sheets-Sheet l INVENTOR.

Hams Hui 1571mm BY a 3 6/ ATTOITVE%$,

June 11, 1935. v H, HONlGMA-N 7 2,004,149

PLATEN PRINTING PRESS Filed Oct. 21, 1931 1 2 Sheets-Sheet 2 l6 1 )7 I8 I T l6 '6 I4- 5 I /z {9):

INVENTOR. H0115 Hardy/nan BY Q MZW ky ATTORNEY),

Patented June 11, 1935 UNITED STATES PATENT OFFICE .PLATEN PRINTING PRESS Hans Honigman, East Cleveland, Ohio,,assignor' to The Chandler & Price Company, Cleveland, Ohio, a corporation of Ohio Application October 21, .1931, Serial No. 576,061

4 Claims.

accommodation to various thicknesses of stock to be printed. Another object is the provision of adjusting means which is uncomplicated and readily operated; Other objects and advantages will appear as the description proceeds.

To the accomplishment of the foregoing and related ends, the invention, then, comprises the features hereinafter fully described, and particuuarly pointed out in the claims, the following desoriptionand the annexed drawings setting forth in detail certain illustrative structure embodying the invention, this being indicative however, of but one of the various ways in which the principle of the invention may be employed.

In said annexed drawings Fig. l is a side elevational view of an embodiment of the invention; Fig. 2 transverse section; Fig. 3 is a fragmentary longitudinal section of a detail of the back-shaft mounting; and Fig. 4 is a fragmentary plan view of a detail associated therewith.

As shown in the drawings, a printing press of the so-called Gordon type is provided with a frame 2 and a bed 3, the former carrying a platen 4 and a drive-shaft 5 operating a crank 6 and a crank-rod l for oscillating the bed with respect to the platen, the bed being mounted on a bed-shaft 8 in the lower portion of the frame. The usual inking mechanism 9 is provided, the precise detail of this being immaterial; and a back-shaft i0 is connected with. the crank rod 1. Immediately supporting the back-shaft I0 is a bushing, or preferably a pair of such bushings H, the latter being mounted in turn in the brackets l2 which extend rearwardly from and are integral with the bed 3. The back-shaft H3 is journalled in the bushings H, the latter being provided for this purpose with eccentric openings through which the back-shaft extends. At the ends, the back-shaft iii is reduced in the form of eccentric gudgeons [3 to which the crankrods or pitman rods 7 are respectively connected. Extending from the bushing H, or preferably joining the two such bushings where a pair is employed, is an arm M, which in the form shown in Fig. 3 may be a bar secured to the respective is a fragmentary an expanded plate-end l8. Acollar l9 mounted between :the lugs l6 and enclosing the stem ,l'! c then allows an adjusting nut 20 to engage the screw-threaded portion of the stem l-l. A setnut 2| is desirably added, to lock the nut 20 in 1.:

adjusted position. By reason of the connection i M to the bushings H, it will be seen that adjustment of the nut 20 on the stem ll swings the bushings l I forwardlyor-rearwardly, 'andcorrespondingly, the position of the -shaft I'll with respect to the bracket, I2 is changed, so as to regulate the effective position of the type-form fore or aft to make the distance between typeform and platen greater or less, as desired in any given instance. As is usual in this type of press, means are also provided for oscillating the back-shaft so as to locatethe bed for printing and throw-off positions respectively, such means being well understood by those skilled in the art and including, as fragmentar-ilyshown in Figs. 2 and 3 of the drawings, a throw-off saddle 4B which is rigidly secured to the backshaft and a lever or back connection 4| which is pivotally secured to the saddle as by means of a pin 42.

As a further refinement, the mounting for the bed may also be provided with an adjustment such that the lower end or bed shaft may be adjusted forwardly or rearwardly in order to bring about parallelism between the face of the typeform and the platen. For this, the bed shaft 8 is of eccentric form, having an arm 22 upstanding, and to this is pivotally, connected a link 23. The other end of the latter is pivoted to a lever 24 which is fulcrumed at 25 to the frame, and at its upper end engages by a rounded head 26 in a housing ,2! swiveled on the end of an adjusting shaft 28 which is screw-threadedly mounted in a bearing 29 on the frame. A handle 30 in the form of a crank allows turning of the shaft 28 for regulation of the position of the arm 22 and corresponding position of the eccentric shaft 8.

The manner of operation of the construction will be readily understood from the foregoing. When it is desired to change the distance between the bed and the platen, as for instance in the event of change in thickness of stock being printed, the set-nut 2! is loosened, and the nut is then turned to advance or retract the lugs IS with respect to the stem I1, and correspondingly regulate the setting of the bed as desired. To secure parallelism for the face of the bed with respect to the platen, the crank handle 30 is turned in the appropriate direction to advance or retract the position of the bed-shaft 8, the screwthreaded shaft 28 operating the lever 24, link 23 and arm 22, to set and retain the eccentric shaft 8 at the point desired.

Other modes of applying the principle of the invention may be employed, change being made as regards the details described, provided the means stated in any of the following claims or the equivalent of such be employed.

I therefore particularly point out and distinctly claim as my invention:

1. In a printing press of the Gordon type, a platen, an oscillatory form-carrying bed adapted to contact therewith, bushings rotatably mounted in said bed and provided with eccentric openings which form aligned bearings, a back-shaft journalled in said bushings, said back-shaft being oscillatory in said bushings to locate the bed for printing and throw-off positions respectively, and

means for rotatively adjusting the bushings intheir bearings within predetermined limits without rotating the back-shaft in said bushings so as to vary the position of the back-shaft to thereby regulate the impression of the form upon stock on the platen.

2. In a printing press of the Gordon type, a platen, an oscillatory form-carrying bed adapted to contact therewith, bushings rotatably mounted in said bed and provided with eccentric openings which form aligned bearings, a back-shaft journalled in said bushings, said back-shaft being oscillatory in said bushings to locate the bed for printing and throw-01f positions respectively, and means for rotatively adjusting the bushings in their bearings within predetermined limits without rotating the back shaft in said bushings so as to vary the position of the back-shaft to thereby regulate the impression of the form upon stock on, the platen, said means including a member secured to said bushings and provided with upstanding lugs, and a threaded stem extending between said lugs and secured to said bed.

3. In a printing press of the Gordon type, a platen, an oscillatory form-carrying bed adapted to contact therewith, bushings rotatably mounted in said bed and provided with eccentric openings which form aligned bearings, a back-shaft journalled in said bushings, said back-shaft being oscillatory in said bushings to locate the bed for printing and throw-off positions respectively, means for rotatively adjusting the bushings in their bearings within predetermined limits without rotating the back-shaft in said bushings so as to vary the position of the back-shaft to thereby regulate the impression of the form upon stock on the platen, and means operable during oscillation of the bed adapted to shift horizontally the axis of oscillation of said bed so as to adjust the face of the form to parallelism with respect to the platen.

4. In a printing press of the Gordon type, a

platen, an oscillatory form-carrying bed adapted to contact therewith, bushings rotatably mounted in said bed and provided with eccentric openings which form aligned bearings, a back-shaft journalled in said bushings, said back-shaft being oscillatory in saidbushings to locate the bed for printing and throw-oi? positions respectively, means for rotatively adjusting the bushings in their bearings within predetermined limits without rotating the back-shaft in said bushings so as to vary the position of the back-shaft to thereby regulate the impression of the, form upon stock on the platen, and means operable during oscillation of the bed adapted to shift horizontally the axis of oscillation of said bed so as to adjust the face of the form to parallelism with respect to the 

